公开(公告)号：US09258056B2

公开(公告)日：2016-02-09

申请号：US14150107

申请日：2014-01-08

Applicant: JUNIPER NETWORKS, INC.

Inventor： Christian Malouin ,  Roberto Marcoccia ,  George R. Sosnowski ,  Theodore J. Schmidt

IPC: H04B10/079

CPC classification number: H04B10/0795 ,  H04B10/07955 ,  H04B10/50

Abstract: In some embodiments, an apparatus includes an optical detector that can sample asynchronously an optical signal from an optical component that can be either an optical transmitter or an optical receiver. In such embodiments, the apparatus also includes a processor operatively coupled to the optical detector, where the processor can calculate a metric value of the optical signal without an extinction ratio of the optical signal being measured. The metric value is proportional to the extinction ratio of the optical signal. In such embodiments, the processor can define an error signal based on the metric value of the optical signal and the processor can send the error signal to the optical transmitter such that the optical transmitter modifies an output optical signal.

Abstract translation: 在一些实施例中，一种装置包括一个光学检测器，该光学检测器可以异步地从可以是光发送器或光接收器的光学部件采样光信号。 在这样的实施例中，该装置还包括可操作地耦合到光学检测器的处理器，其中处理器可以计算光信号的度量值，而不测量所测量的光信号的消光比。 度量值与光信号的消光比成比例。 在这样的实施例中，处理器可以基于光信号的度量值定义误差信号，并且处理器可以将误差信号发送到光发射机，使得光发射机修改输出光信号。

公开(公告)号：US09240843B1

公开(公告)日：2016-01-19

申请号：US13730246

申请日：2012-12-28

Applicant: Juniper Networks, Inc.

Inventor： Christian Malouin ,  Philip A. Thomas ,  Murat Arabaci ,  Bo Zhang ,  Theodore J. Schmidt ,  Roberto Marcoccia

IPC: H04B10/06 ,  H04B10/61

CPC classification number: H04B10/616

Abstract: In some embodiments, an apparatus includes a coherent optical receiver that can receive during a first time period a set of in-phase signals and a set of quadrature signals having a skew from the set of in-phase signals. The coherent receiver can blindly determine a delay between the set of in-phase signals and the set of quadrature signals based on the set of in-phase signals and the set of quadrature signals. The delay includes an intersymbol portion and an intrasymbol portion. The coherent optical receiver can apply the delay at a second time after the first time period such that a skew after the second time is less than the skew at the first time period.

Abstract translation: 在一些实施例中，一种装置包括相干光接收机，其可以在第一时间周期期间接收一组同相信号和一组正交信号，该组正交信号具有来自该组同相信号的偏斜。 相干接收机可以基于同相信号和正交信号集合盲目地确定同相信号组和正交信号组之间的延迟。 延迟包括符号间部分和内符号部分。 相干光接收机可以在第一时间段之后的第二时间施加延迟，使得第二时间之后的偏斜小于第一时间段的偏斜。

公开(公告)号：US20150236795A1

公开(公告)日：2015-08-20

申请号：US14699093

申请日：2015-04-29

Applicant: Juniper Networks, Inc.

Inventor： Christian Malouin ,  Theodore John Schmidt ,  Bo Zhang ,  Elias Simpson ,  Roberto Marcoccia

IPC: H04B10/61 ,  H04L27/227 ,  H04J14/06 ,  H04L7/00 ,  H04B10/40

CPC classification number: H04B10/6161 ,  H04B10/40 ,  H04B10/616 ,  H04B10/6166 ,  H04J14/06 ,  H04L7/0075 ,  H04L27/2273

Abstract: This disclosure describes techniques to sample electrical data streams in coherent receivers. For instance, an analog-to-digital converter (ADC) samples the received electrical data stream at a sampling rate that is nominally twice or greater than twice the symbol rate of the electrical data stream that the ADC receives. A digital filter receives the digital data stream from the ADC, and digitally filters the digital data streams to output a filtered digital electrical data stream at an effective sampling rate that is less than the sampling rate and less than twice the symbol rate, and greater than or equal to the symbol rate.

Abstract translation: 本公开描述了在相干接收机中采样电数据流的技术。 例如，模数转换器（ADC）以标称值为ADC接收的电数据流的符号速率的两倍或更大的采样速率对接收的电数据流进行采样。 数字滤波器从ADC接收数字数据流，并对数字数据流进行数字滤波，以低于采样速率且小于符号速率的两倍的有效采样速率输出滤波后的数字电子数据流，并且大于 或等于符号率。

公开(公告)号：US08687976B1

公开(公告)日：2014-04-01

申请号：US13842240

申请日：2013-03-15

Applicant: Juniper Networks, Inc.

Inventor： Pradeep Sindhu ,  Jayabharat Boddu ,  Roberto Marcoccia ,  Theodore John Schmidt ,  Christian Malouin ,  Abhijit Kumar Choudhury ,  James Michael Murphy

IPC: H04J14/02

CPC classification number: H04B10/27 ,  H04B10/2587 ,  H04B10/272 ,  H04J3/0682 ,  H04J14/0239 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J2014/0253 ,  H04L7/0012 ,  H04L45/62

Abstract: An access network includes an access device having an optical interface module that outputs a plurality of pairs of optical communication signals, each of the pairs of optical communication signals comprising a modulated optical transmit signal and an unmodulated optical receive signal, each of the pairs of optical communication signals having a different wavelength. A customer premise equipment (CPE) comprises an optical interface module to receive the modulated optical transmit signal and the unmodulated optical receive signal for any of the plurality of pairs of optical communication signals. The optical interface module includes a receive module to demodulate the modulated optical transmit signal into inbound symbols and a transmit module having an optical modulator and reflective optics to modulate the unmodulated optical receive signal in accordance with a data signal and reflect a modulated optical receive signal to communicate outbound data symbols to the access device.

Abstract translation: 接入网络包括具有输出多对光通信信号的光接口模块的接入设备，每对光通信信号包括调制的光发射信号和未调制的光接收信号，每对光学 具有不同波长的通信信号。 客户驻地设备（CPE）包括光接口模块，用于接收调制的光发射信号和用于多对光通信信号中的任何一个的未调制的光接收信号。 光接口模块包括接收模块，用于将经调制的光发射信号解调为入射符号，以及具有光调制器和反射光学器件的发射模块，用于根据数据信号调制未调制的光接收信号，并将调制的光接收信号反射到 将出站数据符号传送到访问设备。